C#

public class ControllerPage : System.Web.UI.Page
{
    protected long m_nStatusCode;

    long PropStatusCode(value)
    {
        get { return m_nStatusCode;  }
        set { m_nStatusCode = value; }
    }
}


public abstract class DerivedPage : ControllerPage
{
    // does need to do anything with/to the data member defined above
}


public partial class MyPage : DerivedPage
{
    // sets/gets the property value defined in the base ControllerPage class
    public void MyFunction()
    {
        this.StatusCode = 1;
        if (this.StatusCode == 1)
        {
            // do something
        }
    }
}